12181339212 has 48 divisors (see below), whose sum is σ = 33895905792. Its totient is φ = 3329061120.

The previous prime is 12181339207. The next prime is 12181339229. The reversal of 12181339212 is 21293318121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3150589 + ... + 3154452.

It is an arithmetic number, because the mean of its divisors is an integer number (706164704).

Almost surely, 2^12181339212 is an apocalyptic number.

12181339212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12181339212 is an abundant number, since it is smaller than the sum of its proper divisors (21714566580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12181339212 is a wasteful number, since it uses less digits than its factorization.

12181339212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305078 (or 6305076 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The spelling of 12181339212 in words is "twelve billion, one hundred eighty-one million, three hundred thirty-nine thousand, two hundred twelve".